a=load('PO_Feko.dat');
b=load('PO_EPA.dat');
tick=[0:1:180];

figure(1);
plot(tick,a(:,2),'b-');
hold on;
plot(tick,b,'r+-','MarkerSize',3);
xlabel('\theta_s');
ylabel('RCS(dBsm)');
legend('Original PO-MM','PO-MM with EPA');
title('VV polarization');